The answer is carbon dating. This method is based on the fact that a radioactive isotope of carbon is constantly being created in the atmosphere due to the interaction of cosmic rays with atmospheric nitrogen. This radioactive carbon combines with oxygen to form radioactive carbon dioxide. This carbon dioxide enters the food web, first through plants through photosynthesis, and then to the primary and secondary consumer levels. Therefore, animal and plant material will contain a portion of this radioactive carbon. This particular form of carbon has a half life of <span>5,730 years due to radioactive decay. So this is how scientists are able to date the age of biological material.</span>
Answer:
How many homologous pairs are found in a diploid cell? 22 pairs
b. How many single chromosomes (unreplicated) are found after the Sphase? 46 chromosomes
c. How many chromosomes are present in one cell at the end of meiosis II? 15 chromosomes
d. How many chromatids will be found at the beginning of meiosis I? 92 chromatids
e. How many cells will be produced at the end of meiosis II? four
f. How many tetrads will form in mitosis? 23 different tetrads
Explanation:
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Either number if earth quakes or sever weather
Purkinje Fibers are the fibers that spread impulses through the heart
